Hello everyone,

Do you still remember the time when you had to dismount the stores in order to check it's integrity, and running "Isinteg -S "servername" -Fix -Test AllTests" at a regular command line, once or twice, depending on the errors/ warnings ???

Well, those days are gone :)

In Exchange 2010 SP1, ISInteg is no longer a standalone program.

The functionality provided by the ISInteg tool has been rolled into two new Exchange Management Shell cmdlets:

  • New-MailboxRepairRequest
  • New-PublicFolderDatabaseRepairRequest
Note: Like other Shell cmdlets, these are subject to Role-Based Access Control (RBAC) scoping restrictions. For details, see Understanding Management Role Scopes.

Cool Features

These new ISInteg cmdlets come with some cool new functionality!
  • The cmdlets work with the database mounted. It's no longer required to unmount the database to perform an integrity check or fix database errors.
  • You can repair logical corruption at the mailbox level.
  • You can fix corrupt search folders.
  • You can fix the Provisional Fid.
  • You can fix Aggregate Counts.

ISInteg can now work at the database or mailbox level

How does it do that? Well, the new schema in Exchange 2010 effectively partitions the database by mailbox. So the top problems fixed by ISInteg are now mostly limited to the affected mailboxes only. Previous versions of ISInteg required the database to be offline while validation and fixing are in progress. In Exchange 2010 SP1, the ability to do these checks at the mailbox level removes the need to dismount the database. It is actually required to have ISInteg operate against an online database!

New-MailboxRepairRequest

The New-MailboxRepairRequest cmdlet detects and fixes the following types of mailbox corruptions:
  • Search folder corruptions (SearchFolder): Repair tasks now look for all folders named in ptagSearchBacklinks, ptagSearchFIDs, and ptagRecursiveSearchFIDs and verifies that each folder exists. If the folder no longer exists, then it will remove that folder from the list.
  • Aggregate counts on folders that aren't reflecting correct values (AggregateCounts): Repair tasks tally all messages in a folder and keep a running total of various counts and sizes. Once the iteration is complete, it will verify the computed counts against the persisted counts on the Folders table record for the folder. If there is a discrepancy, it will update the persisted counts to reflect the computed counts.
  • Views on folders that aren't returning correct contents (FolderView): Repair tasks will iterate over all views for a folder and for each one, bring the view fully up to date and then reconstruct a temp copy. If there is a discrepancy between the existing view and the contents of the temp table, it will delete the view so it can be rebuilt from scratch the next time it is requested.
  • Provisioned folders that are incorrectly pointing into unprovisioned parent folders (ProvisionedFolder): Repair tasks can fix Provisioned folders incorrectly pointing into unprovisioned parents or vice versa.

Syntax

New-MailboxRepairRequest -Mailbox <MailboxIdParameter> -CorruptionType <MailboxStoreCorruptionType[]> [-Archive <SwitchParameter>] [-Confirm [<SwitchParameter>]] [-DetectOnly <SwitchParameter>] [-DomainController <Fqdn>] [-WhatIf [<SwitchParameter>]]

New-MailboxRepairRequest -Database <DatabaseIdParameter> -CorruptionType <MailboxStoreCorruptionType[]> [-Confirm [<SwitchParameter>]] [-DetectOnly <SwitchParameter>] [-DomainController <Fqdn>] [-WhatIf [<SwitchParameter>]]

Parameters

  • Database, Mailbox and Archive: You can repair an entire mailbox database or a specified mailbox by specifying either the Database or the Mailbox parameter. You can't use both. To repair the archive mailbox for the specified user, use the Archive switch.
  • CorruptionType: (at least 1 required) you are already familiar with, we discussed them above:
    • SearchFolder
    • AggregateCounts
    • ProvisionedFolder
    • FolderView

    You can run a repair task with multiple parameters if you separate them with a comma (as shown in the Examples section below).

  • DetectOnly: (Optional) The DetectOnly switch secifies that you want this command to report errors, but not fix them. You don't have to specify a value with this switch.
  • Other Optional Parameters: This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer and OutVariable. For more information, type "get-help about_commonparameters".

    New-PublicFolderDatabaseRepairRequest

    The New-PublicFolderDatabaseRepairRequest cmdlet detects and fixes Public Folder replication state problems.

    Syntax

    New-PublicFolderDatabaseRepairRequest -Database <DatabaseIdParameter> -CorruptionType <PublicFolderDatabaseCorruptionType[]> [-Confirm [<SwitchParameter>]] [-DetectOnly <SwitchParameter>] [-DomainController <Fqdn>] [-WhatIf [<SwitchParameter>]]

    Parameters

    • Database: (required) Specifies the Public Folder database on which you will run this command. You can use one of the following values:
      • GUID of the database
      • Database name
    • CorruptionType: (required) Pretty easy, there's only one value.
      • ReplState
    • DetectOnly: (optional) Specifies that you want this command to report errors, but not fix them. You don't have to specify a value with this parameter.
    • Other Optional Parameters: This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer and OutVariable. For more information, type "get-help about_commonparameters".

    Examples

    New-MailboxRepairRequest -Mailbox administrator@contoso.com -CorruptionType SearchFolder, AggregateCounts, ProvisionedFolder, FolderView

    New-MailboxRepairRequest -Mailbox administrator -CorruptionType SearchFolder, AggregateCounts, ProvisionedFolder, FolderView -WhatIf

    New-PublicFolderDatabaseRepairRequest -Database PFD01 -CorruptionType ReplState -DetectOnly

    Some additional examples are provided in the cmdlet help. You can retrieve them using the following commands, or refer to New-MailboxRepairRequest and New-PublicFolderDatabaseRepairRequest cmdlet reference:

    Get-help New-MailboxRepairRequest -examples
    Get-help New-PublicFolderDatabaseRepairRequest -examples

    I recommend that you get to know the cmdlets by using the cmdlet reference docs, or by using the following commands to retrieve detailed help from the shell:

    Get-help New-MailboxRepairRequest -detailed (or -full)
    Get-help New-PublicFolderDatabaseRepairRequest -detailed (or -full)

    There are, obviously, some things to remember :

    • Only 1 active repair task is permitted to be running per server if the active task is a database level repair.
    • Only 100 mailbox level active repair tasks are permitted to be running at once per server.
    • There is no -Server parameter to do all databases or mailboxes on a server.
    • The repair task dies on database dismount or store stop/crash.
    • The only way to stop a repair is to stop the store or dismount the database.
    • Mailbox access will be disrupted for the mailbox that is being repaired.
    • Repair for a mailbox will skip a mailbox if it has been quarantined.
    • Repair will cause a move-mailbox operation to be delayed until the repair is completed.

    You can find the whole article at : http://msexchangeteam.com/archive/2010/08/23/455899.aspx

Kind regards,

João Ribeiro